JPH05141702A - Air-conditioner for toilet - Google Patents

Abstract

PURPOSE:To obtain the above air-conditioner of which the cooling capacity is not decreased even until a condenser is submerged after flushing water begins to be supplied. CONSTITUTION:When water begins to be supplied, it is immediately poured on a condenser 3 against a sprinkler 12 and heat is positively radiated from the condenser. At this time, the amount of its radiation is increased by four to five times as compared with the natural convection of the water. In the case where the sprinkler 12 is not mounted, the heat can not be radiated from the condenser 3 as soon as the water is flushed. As the result of it, cooling capacity begins to be decreased and the pressure at the high pressure side in a refrigeration cycle begins to be increased. In the case where the sprinkler 12 is mounted, the heat begins to be positively radiated from the condenser as soon as the water is discharged and cooling operation can be done without decreasing the cooling capacity even during water supply. In addition, when the heat is positively radiated by sprinkling the water, the following advantages are obtained, that is to say, the pressure at the high pressure side in the refrigeration cycle can be kept low, electric power to be consumed is decreased and after the condenser 3 is submerged, the cooling capacity at the initial stage of operation can be immediately displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet air conditioner having a refrigeration cycle.

[0002]

2. Description of the Related Art A toilet air conditioner in which a condenser is arranged in a low tank is disclosed in Japanese Patent Laid-Open No. 2-115632. This toilet air conditioner dissipates the heat generated by the condenser to the flush water in the low tank, thus reducing the cost by eliminating the outside air intake / exhaust duct, and also for toilets installed in places not exposed to the outside air. It can be installed.

[0003]

However, in the above-mentioned toilet air conditioner, when the washing water is drained from the low tank and the condenser is exposed in the low tank, the heat radiation amount is reduced or the heat radiation becomes impossible, but the cooling capacity is temporary. However, there is a problem that sufficient cold air cannot be obtained. The flush toilet has a mechanism in which flush water is automatically supplied to the low tank together with drainage of flush water, but it is difficult to uniformly cool the condenser even if the water supply port is simply directed to the condenser. .. The present invention has been made to solve the above problems, and an object of the present invention is to provide a toilet air conditioner capable of cooling even from the start of supplying water for flushing until the condenser is submerged. Is.

[0004]

As a concrete means for solving the above problems, a refrigerating cycle in which a refrigerant compressor, a condenser, a decompression device and an evaporator are sequentially connected is provided, and a low tank for storing washing water is provided. In the toilet air conditioner in which the condenser is arranged, there is provided a toilet air conditioner characterized in that it is provided with a sprinkling means for sprinkling washing water to be supplied to the low tank at the time of washing with water to the condenser.

[0005]

According to the toilet air conditioner described above, the water sprinkling means uniformly sprays the washing water supplied into the low tank to the condenser arranged in the low tank to allow heat dissipation and lower the cooling capacity. Prevent.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a toilet air conditioner. The refrigeration cycle A provided in the toilet air conditioner includes a refrigerant compressor 2, a condenser 3, a pressure reducing device 4 including a capillary tube 4a and the like in a refrigerant circulation path 1, an evaporator 5 provided with a blower 5a, and an accumulator 6. It is the one that is interposed. The condenser 3 is formed by forming a refrigerant inflow pipe 8 and a refrigerant outflow pipe 9 at both ends of a coil-shaped winding portion 7 and connecting them to the refrigerant circulation path 1. As shown in FIG. The portion 7, the refrigerant inflow pipe 8 and the refrigerant outflow pipe 9 are arranged substantially vertically and arranged in the raw tank 11 of the flush toilet 10. Above the coiled winding part 7, a bowl-shaped sprinkler 12 is installed. The sprinkler 12 is provided with a plurality of small holes 12a.

A water supply pipe 13 is provided along the side wall and the bottom surface of the raw tank 11, and the tip is bent substantially vertically.
The bent tip portion 14 is passed through the center of the coil-shaped winding portion 7, and the upward water supply port 15 is made to correspond to substantially the center of the sprinkler 12. A water supply valve 16 is provided on the water supply pipe 13 along the side wall of the low tank 11. When the water level of the washing water w to be supplied to the low tank 11 reaches the set water level, the water supply valve 16 is closed by the operation of the float 17 that rises following the water level and stops the water supply. In addition, low tank 11
Inside the toilet bowl 10 of the toilet bowl 10 of flush toilet
A drain valve device 18 for flowing to a, an overflow pipe, etc. (not shown) are provided.

Since the operation of the refrigeration cycle A provided in the toilet air conditioner having the above structure is already well known,
The operation of the condenser 3 will be mainly described below. Condenser 3
The high-temperature and high-pressure gas refrigerant sent to is cooled by the washing water w in the low tank 11 to be condensed and liquefied. At this time, since the heat of the gas refrigerant is radiated to the washing water w, the water temperature in the vicinity of the coiled winding portion 7 of the condenser 3 locally rises, and convection toward the water surface occurs. .. Above the coiled winding portion 7, a bowl-shaped sprinkler 12 is installed,
Since the sprinkler 12 is formed with the small holes 12a, the convection to the water surface is not hindered and the washing water w in the raw tank 11 is uniformly stirred.

FIG. 3 shows the cooling capacity characteristics of the refrigeration cycle A in the above operating state. However, the temperature of the washing water w at the time of water supply is 20 ° C., and the capacity of the washing water w stored in the low tank 11 is 8 liters. 2 after starting operation after water supply
After 0 minutes, the washing water w rises to about 38 ° C. Therefore, the amount of heat radiated from the condenser 3 is reduced, and the cooling capacity of the refrigeration cycle A is about 510 kcal / h to 470 kcal / h.
It decreases to kcal / h.

On the other hand, after using the flush toilet, the low tank 11
When the flushing water w is flown to the toilet 10 from the above, the float 17 moves down following the water level of the low tank 11 which descends, and the water supply valve 16 is opened to start water supply. Then, water is jetted from the upward water supply port 15 of the bent tip portion 14 of the water supply pipe 13 toward the sprinkler 12. The water that has been inverted by the prone bowl-shaped water sprinkler 12 partially flows out from the small hole 12a, but most of it falls on the coiled winding portion 7 along the inner curved surface thereof to cool the condenser 3.

4 (a) and 4 (b) show the sprinkler 12 as described above.
This is a comparison between the cooling capacity when the condenser 3 is positively cooled by using and the cooling capacity when the sprinkler 12 is not used. However, the time from the start of water supply to the completion of water supply is 2
The time until the condenser 3 is submerged in water is 80 seconds from the start of water supply. When the sprinkler 12 is not used, as shown in FIG. 4A, the amount of heat released from the condenser 3 decreases until the condenser 3 is submerged by water supply after the washing water w flows from the low tank 11. However, heat dissipation becomes impossible and the pressure of the high pressure gas refrigerant further rises, resulting in an increase in power consumption. Further, in this state, even if the condenser 3 is submerged in water, it takes a rising time of 2 minutes + α until the high pressure of the gas refrigerant does not immediately drop and the cooling capacity is restored to the initial state. I can't show it.

On the other hand, when the condenser 3 is positively cooled by using the water sprinkler 12, immediately after the water supply is started, the water spouts from the water sprinkler 12 to the condenser 3 and the washing water w The heat dissipation is 4 to 5 times that of convection (4 to 5 times the heat transfer coefficient compared to natural convection heat transfer), the cooling capacity increases for 80 seconds from the start of water supply, and the capacity of the refrigerant compressor 2 525 kcal / h. Therefore, during this period, even if compared with the initial cooling capacity (510 kcal / h), the capacity of 525-510 = 15 kcal / h can be improved. When the sprinkler 12 is used in this manner, the cooling capacity does not decrease even during water supply, and the cooling capacity is rather advantageous (see the shaded area in FIG. 4B). By positively radiating heat as described above, the pressure on the high pressure side in the refrigeration cycle A can be suppressed to a low level, power consumption can be reduced, and the initial cooling capacity can be exerted immediately after the condenser 3 is submerged. There is.

FIG. 5 shows another mode of sprinkling water on the condenser 3, FIG. 5 (a) shows a mode of sprinkling water on the condenser 3 from diagonally above using the shower nozzle 22, and FIG. ) Indicates a mode in which the perforated plate 32 is arranged below the downward water supply port 35 to spray water.

[0014]

EFFECTS OF THE INVENTION The present invention has the above-mentioned structure, and since the sprinkling means uniformly sprays the washing water to be supplied into the low tank to the condenser arranged in the low tank, the water supply is started. There is an effect that it is possible to provide a toilet air conditioner capable of exhibiting sufficient cooling capacity from the time until the condenser is submerged in water.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a toilet air conditioner according to the present invention.

FIG. 2 is an enlarged perspective view of a condenser and a water sprinkler.

FIG. 3 is a graph showing the cooling capacity of the refrigeration cycle according to the present invention.

FIG. 4 is a graph comparing the cooling capacity with and without the sprinkler.

FIG. 5 is a schematic perspective view showing another watering mode.

[Explanation of symbols]

2 ... Refrigerant compressor, 3 ... Condenser, 4 ... Pressure reducing device,
5 ... Evaporator, 11 ... Low tank, 12 ... Sprinkler, 22 ... Shower nozzle, 32 ... Grain.

Claims (1)

[Claims] 1. A toilet air conditioner comprising a refrigeration cycle in which a refrigerant compressor, a condenser, a decompression device and an evaporator are sequentially connected, and the condenser is arranged in a low tank for storing water for flushing. An air conditioner for a toilet, comprising a sprinkling means for sprinkling flush water for supplying water to a low tank to the condenser.